Implement indexed access on select elements
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Added methods for indexed access on select: SetLength, Length, Item, IndexedGetter
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fix JS IndexedGetter and NamedSetter bindings generation
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Fix JS IndexedGetter and NamedSetter bindings generation.
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- [X] These changes fix#13327 (github issue number if applicable).
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webgl: FBO support preparation
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Sending this PR now so that we can get the webrender patches merged. This is prep for the webgl-fbo series, with one small fix for some conformance tests.
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Decode UTF-8 with from_utf8_lossy in DedicatedWorkerGlobalScope
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